Rheiformes

plural noun
Rhe·​ifor·​mes | \ ˌrēəˈfȯr(ˌ)mēz \

Definition of Rheiformes

: an order of birds that are intermediate in some respects between the ostriches and the emus and cassowaries and that comprise the recent and extinct rheas

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for Rheiformes

New Latin, from Rhea + -iformes

Learn More About Rheiformes

Dictionary Entries Near Rheiformes

Rheidae

Rheiformes

Rhemish

See More Nearby Entries 

Statistics for Rheiformes

Cite this Entry

“Rheiformes.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Rheiformes. Accessed 29 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Great Words for Scrabble

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!